/*
 * (C) Copyright 2006-2010 Nuxeo SAS (http://nuxeo.com/) and contributors.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser General Public License
 * (LGPL) version 2.1 which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl.html
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * Contributors:
 *     bstefanescu
 */
package org.nuxeo.gwt.habyt.app.client;

import java.util.HashMap;
import java.util.Map;

import org.nuxeo.gwt.habyt.app.client.actions.RemoteAction;

import com.google.gwt.core.client.GWT;

/**
 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
 * 
 */
public class ActionFactory {

    private static ActionFactory instance;

    public static ActionFactory get() {
        if (instance == null) {
            instance = GWT.create(ActionFactory.class);
        }
        return instance;
    }

    protected static interface Constructor {
        Action<?> create(String type);
    }

    protected Map<String, Constructor> actions;

    public ActionFactory() {
        actions = new HashMap<String, ActionFactory.Constructor>();
    }

    public Action<?> getAction(String type) {
        Constructor ctor = actions.get(type);
        if (ctor != null) {
            return ctor.create(type);
        } else {
            return new RemoteAction(type);
        }
    }
}
